@BartyDeCanter
@TheDarkQuark
Hubzilla has a calendar module with calDAV functionality. Maybe 'gmx' may help with e-mail.

@promitheas
A quick web search, interesting mention of both mailbox, disroot servers stores messages un-encrypted.
So it seems that the user must save messages encrypted. Then there is the problem of the average non-nerd user that does not know how to encrypt messages (e.g. they send a quick reply from the moblie phone).

@promitheas
No sound, but perhaps contact those people for a response to the video?
Why would someone store messages in plain text? Are they sent via SSL/TLS?

@promitheas
Don't know, but regular reserve copies to mbox format, 1gb should be sufficient. The advantage of small space allocation:)

@promitheas
disroot

@BlackEco
Module 'calendar' within hubzilla